Photographic film.



I. M. KELLEY.

PHOTOGRAPHIC FILM.

APPLICATLON FILED OCT. 8, 1917- L mfi mlm Patefited Dec. 3,1918.

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IRWIN llll. KELLEY, 01F JLACONIA, NEW

PHOTOGPHIC FIT.

Specification of Letters Patent.

Application filed October 8, 1917. Serial No. 195,295.

To all whom it may concern:

Be it known that T, lnvIN Ml. KELLEY, a citizen ofthe United States, and resident of Laconia, inthe county of Belknap and State of New Hampshire, have invented certain new and useful Improvements in Photographic ]Films, of which the following 1s a specification.

This invention relates to photographic films of the type known as roll films, and the object of my invention-is to provide an improved film which, although so constructed as to provide a series of exposures capable of being developed in the ordinary way, by hand or in a developing machine, will enable the user to make one or more exposures and remove and develop them in a dark room I and restore the unused portion of the film to the camera for later exposing.

A further object is to provide a film of this character which, like the ordmary film,

provides for a straight and even pull tohold each section flat during exposure. Separate cut films usually buckle or warp. db I To these ends my invention consists in the improved film substantially as hereinafter described and claimed.

Of the accompanying drawings:

Figure 1 is a face view of my improved device.

Fig. 2 is an edge view of a portion of the sensitized film and its backing or carrying strip, on a larger scale.

The opaque backing or carrying strip 12 and its carrying spool 13 are or may be the same as commonly used for some years.-

Referring now to drawing, the sensit1ve film 14 is transversely cemented to the strap 12 at intervals as at 15, said film preferably having, at'each side of and close to the line of cement, an indication of where the film may be cut, as with scissors. The indications may consist of lines 16 lightly printed upon or impressed in the film. .As best shown by Fig. 2, the length of each portion of strip 12 from one cemented point 15 to the next exceeds the len h.of film between the same two pints so t at when any section of the film is in position for exposure the portion of stri that is behind said section will be slack, t e pull of the strip being transmitted to the film, through said cemented points,- so

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end of the film 14 nearest the terminal 18 of the strip 12 may be secured to said strip in the usual manner, as by a cemented transverse strip 19.

All of thesections 17 can be successively exposed and then developed, in the customary manner, without se aration of any sections, as the film is continuous. If, however, it is desired to develop the first one or more of the sections, without waiting until all seetions have been exposed, the user can, in the dark room, detach the one or more sections that have been exposed, by cutting on the line 16. As the carrying strip remains intact, and as the unexposed sections are attached thereto, the whole can be returned to the camera with the strip terminal 18 reconnected to the winding-up roll.

Having now described my invention, what claim is 1. As a new article of manufacture for the purposes described, a carrierstrip'having an elongated sensitized film attached thereto at its ends and atintermediate spaced intervals, means being provided to indicate proper locations for cutting the film to remove sections thereof from the strip without separating remaining portions of the film from the strip.

2. As a new article of manufacture for the purposes described, a carrier strip having an elongated sensitized film attached thereto at its ends and having pairs of cutting indications at regular intervals, said strip and film being connected together between the cutting indications of each pair and beingotherwise free from each other, whereby sections of film may be cutaway individually without disturbing. other sections.

In testimony whereof l have amxed my signature. 

